78177256742180 has 12 divisors (see below), whose sum is σ = 164172239158620. Its totient is φ = 31270902696864.

The previous prime is 78177256742177. The next prime is 78177256742231. The reversal of 78177256742180 is 8124765277187.

78177256742180 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 35345022548224 + 42832234193956 = 5945168^2 + 6544634^2 .

It is a super-3 number, since 3×78177256742180³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954431418535 + ... + 1954431418574.

It is an arithmetic number, because the mean of its divisors is an integer number (13681019929885).

Almost surely, 2^{78177256742180} is an apocalyptic number.

It is an amenable number.

78177256742180 is an abundant number, since it is smaller than the sum of its proper divisors (85994982416440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78177256742180 is a wasteful number, since it uses less digits than its factorization.

78177256742180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908862837118 (or 3908862837116 counting only the distinct ones).

The product of its (nonzero) digits is 73758720, while the sum is 65.

The spelling of 78177256742180 in words is "seventy-eight trillion, one hundred seventy-seven billion, two hundred fifty-six million, seven hundred forty-two thousand, one hundred eighty".